package com.ihrm.common.shiro.session;

import org.apache.shiro.web.servlet.ShiroHttpServletRequest;
import org.apache.shiro.web.session.mgt.DefaultWebSessionManager;
import org.apache.shiro.web.util.WebUtils;
import org.springframework.util.StringUtils;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import java.io.Serializable;

public class CustomSessionManager extends DefaultWebSessionManager {
    /**
     * 头信息中具有sessionid
     *      请求头：Authorization：sessionid
     * 指定sessionId的获取方式
     */
    @Override
    protected Serializable getSessionId(ServletRequest request, ServletResponse response){
        /**
         * 获取请求头Authorization中的数据
         */
        String id= WebUtils.toHttp(request).getHeader("Authorization");
        if(StringUtils.isEmpty(id)){
            /**
             * 如果没有携带，生成新的sessionId
             */
            return super.getSessionId(request,response);
        }else {
            /**
             * 请求头信息: bearer sessionid
             */
            
            id=id.replaceFirst("Bearer ","");
            /**
             * 返回sessionId；
             */
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_SOURCE,"header");
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID,id);
            request.setAttribute(ShiroHttpServletRequest.REFERENCED_SESSION_ID_IS_VALID,Boolean.TRUE);
            return id;
        }
    }
}
